[Feat] User provided InitialDesign

[eddiebergman]

It would be good to have an initial design that allows users to simply pass configurations they would like to start with. Currently this is not covered by any documented means. The easiest way for me to implement this is to inheirt from AbstractInitialDesign and pass this in.

Proposed solution:

• A ProvidedInitialDesign which simply takes a list of configurations to start with.
  • Optionally should could have probability of sampling with n_configs to allow them to provide something like 10 configs but only have 5 sampled with a given waiting.
• Simply pass a list[Configuration] to initial_design= which internally creates ProvidedInitialDesign and uses that.

The overhead to integrate this seems relatively low and I imagine it's easy enough to test.

[eddiebergman]

class ProvidedInitialDesign(AbstractInitialDesign):
    def __init__(self, scenario: Scenario, configs: Iterable[Configuration]):
        self.configs = list(configs)
        super().__init__(scenario=scenario, n_configs=len(self.configs))

    def _select_configurations(self) -> list[Configuration]:
        for config in self.configs:
            config.origin = "Provided Initial Design"

        return self.configs